Your analogy requires: A. the person to have convictions for dealing, not just possession, and B. mobster-era Italians to be just about as likely to engage in

Your analogy requires: A. the person to have convictions for dealing, not just possession, and B. mobster-era Italians to be just about as likely to engage in illegal bookmaking and racketeering as the general population, and C. a history of hundreds of years of imposing underclass status on Italians (like that imposed on African Americans), with modern-day policing skewed very heavily against them.